/ Dictionary / Index W wing bar: Meaning and Definition of Find definitions for: wing' bar" Pronunciation: [key] a line of contrasting color along the coverts of a bird's wing. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. wingback formation wing bit Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language